Sight for fire-arms



(No Model.)4

W. LYMAN.

SIGHT POR FIRE ARMS'. N0. 298,305. Patented Mey 6, 1884.

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WILLIAM LYMAN, OF MIDDLEFIELD, CONNECTICUT.

SIGHT FOR FIRE-ARMS.

SPECIFICATION forming part of Letters Patent No. 298,305, dated May 6,1884.

Application lcd March 4, 1884. (No model.)

To aZZ whom, t may concern:

Beit known that I, WILLIAM LYMAN; a citizen of the United States, residing at Middlefield, in the county of Middlesex and State of Connecticut, have invented new and useful Improvements in Sights for Fire-Arms, of which the following is a specication.

My invention relates to the rear sight for re-arms, and especially that class thereof shown and described in my Letters Patent of the United States No. 211,753, dated January 28, 1879.

My present invention consists in the novel construction, hereinafter described, of a hingejoint for adjusting and locking 'the sight on the base, whereby I gain the advantage, among others, of rendering the base capable of being reduced in height.

In the accompanying drawings, Figure I is a longitudinal section of a sight embodying my present invention. Fig. 2 is a cross-section thereof. Figs. 3, 4, and 5 are detail views of parts.

Si milar letters indicate corresponding parts. The letter A designates the base, and B the sight, the latter being constructed with a shank, C.

On the base A are formed knuckles D D, and on the sight-shank is formed a corresponding knuckle, E, which is fitted between the knuckles of the base, and united thereto by an axial bolt, F, to form a hinge-joint. knuckle E of the sight-shank has an internal notch, o, extending longitudinally thereof, and the bolt F is constructed with a spring-catch, s, which engages the notch when the sight is turned to an upright position, as shown in Fig. l, and consequently the sight is firmly locked in the position named by means of the catch. It will be seen that by arranging the catch s on the bolt F, in distinction from the base A, as heretofore, the base can be materially reduced in height or thickness, so that it offers the least obstruction to the hand by which the gun is taken hold of in shooting. It is evident that the notch oto receive the catch s may be formed in the knuckles D D of the base. In the example shown the catch s is in one piece with the bolt F, it projecting in- Wardly from a loop, u, on one end of the bolt opposite to a longitudinal groove in its body, the loop constituting the spring of the catch The | as well as the head of the bolt, and it -will be seen that by this construction a simple and durable spring-catch is obtained. When the notch o is formed in the knuckle E of the sight-shank, the bolt F should remain stationary when the sight is turned to its respective positions, and for this purpose the bolt is constructed with a screw-threaded projection, x,

of reduced diameter at the end opposite to the loop u, forming a shoulder, t', to impinge against one of the knuckles of the base, and a set-nut, G, beveled on the inner surface, to impinge against a corresponding seat, isfitted on such projection, so that when this nut is tightened the friction thereof with its seat prevents it from turning, and with the thread of the bolt prevents the bolt from turning.

, Vhat I claim as new, and desire to secure by Letters Patent, is

l. The combination, substantially as hereinlbefore described, of thev base and the sightshank, having corresponding knuckles, either of which is provided with an internal notch, the axial bolt uniting the knuckles, and the spring-catch of the bolt adapted to engage the notch for locking the sight in its upper position.

Y 2. The combination, substantiallyas hereinbefore described, of the base and the sight- .shank, having corresponding knuckles, either of which is provided with an internal notch, the axial bolt uniting the knuckles, the springloop on one end of the bolt, and the catch projecting inwardly from the-loop to engage the notch for locking the sight in its upper position.

3. The combination, substantially as hereinbefore described, of the base having knuckles, the sight-shank having a knuckle corresponding to those of the base, provided with an internal notch, the axial bolt uniting the knuckles, the spring-catch of the bolt, the screw-threaded projection of reduced diameter at one end of the bolt, and the nut having a beveled inner surface.

In testimony whereof` I have hereunto set my hand and seal in the presence of two subscribing witnesses.

WILLIAM LYMAN. [L s] Vitnesses:

LYMAN A. MILLS,

WM. P. RICHARDSON. 

